3 ms·

FWIW, with folly::gen [1], this is just: using namespace folly::gen; byLine('/a/file/with/numbers') | eachTo<int> | sum; https://github.com/facebook/f

• seri 12y ago
  Thank you for this. Got me really interested in folly now.
• nly 12y ago
  It's only 2 lines even restricting yourself to the standard library #include <fstream> #include <iterator> #include <numeric> using namespace std; int main() { ifstream nf ("numbers.txt"); return accumulate (istream_iterator<int>(nf), istream_iterator<int>(), 0); }